In HBR Blog article, Ten Ways to Get People to Change, Morten Hansen compiles research on the topic of how you get leaders, employees, customers and even yourself to change. It’s a great article.

The three ways that stand out for me:

Focus on one change at a time. Sequence to change more than one behavior

Paint a vivid picture. Use images, stories, metaphors and objects to paint an ugly “before” picture of where things stand now, and a glorious, compelling vision of the “after” picture.

Tweak the situation. Hansen uses the example of how Google changed where things are located in the physical flow of their cafeteria to get people to choose healthier foods.

This third one intrigues me. How does tweaking the situation work? A book Hansen cited in his blog article is Switch, How to Change Things When Change is Hard by Chip Heath and Dan Heath. The Amazon description perfectly captured my daily struggle to stick with my exercise and nutritional program: “Psychologist have discovered that our minds are ruled by two different systems – the rational mind and the emotional mind – that compete for control. The rational mind wants a great beach body; the emotional mind wants that Oreo cookie.”

Yesterday my emotional mind was clearly running the show when I reached for that delicious Haagen Daaz bar.

I’m only on the second chapter, and I’m hooked. The book starts with a study: a research team gave moviegoers two sizes of free popcorn – both way too much to eat – one medium sized and one large. They carefully engineered the popcorn to taste wretched, “one moviegoer later compared it to styrofoam packing material.” Yet the moviegoers ate it anyway. The study was designed to determine whether someone with a larger inexhaustible supply would eat more than someone with a smaller inexhaustible supply.

The result: Those with large buckets of wretched popcorn ate 52% more than those with medium sized buckets – the equivalent of 173 more calories, 21 extra hand-dips of wretchedness. The ran the studies again, in different cities with different movies and the results were the same. People eat more when you give them a bigger container.

If you want people to eat less popcorn, change the situation, not the behavior. The easy way is to shrink the bucket – the hard way is to figure out how to motivate people to adopt healthier snacking behaviors.

How many of our most challenging changes are situation problems and not behavior problems? What if you could change the situation (eat off a smaller plate) to make it possible for you to get the outcome you want with less effort and discipline?

Well, I’m hooked. Off to read more about how I can unite the rational and emotional minds to stay clear of the Hagen Daaz.